I get the same kind of calls almost everyday.  Tired of this happening.  I now don't answer when I see this number come up on caller ID.

they are a collection agency they want you to call back. when you do its level 3 communications LLC. Collections.

calling us believing we are Gary McMillan, said they are S,D,H Inc.
I have asked to have our number removed from their list.

the call was for a Mr. Mc Millan, who previously had this number.
The either are a collection agency or trying to get donations.

I want whoever this is to stop calling my home numerous times a day. I am on the Do Not Call Registry- what good it does.

Same thing here. They call numerous times a day and never leave a message.  Phone rings once and they hang up.

Unkown caller. The phone rings 1 time and then disconnects. I have answered before and they hang up as soon as they hear a voice.